What does the Bible say about the role of the apostle?

In 2 Corinthians 1:1, Paul identifies himself as an apostle of Jesus Christ by the will of God, which indicates that true apostles are not appointed by human means but rather by divine calling. Throughout Scripture, we see that God chooses individuals like Moses, Peter, and Paul, equipping them to declare His truth. This divine selection highlights the sovereignty of God in the commissioning of His messengers, ensuring that the message they bring is grounded in divine authority, not human wisdom.